| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc --mtriple=loongarch32 < %s | FileCheck %s |
| ; RUN: llc --mtriple=loongarch64 < %s | FileCheck %s |
| |
| declare i32 @llvm.loongarch.csrrd.w(i32 immarg) nounwind |
| declare i32 @llvm.loongarch.csrwr.w(i32, i32 immarg) nounwind |
| declare void @bug() |
| |
| define dso_local void @foo(i32 noundef signext %flag) nounwind { |
| ; CHECK-LABEL: foo: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: beqz $a0, .LBB0_2 |
| ; CHECK-NEXT: # %bb.1: # %if.then |
| ; CHECK-NEXT: csrrd $a0, 2 |
| ; CHECK-NEXT: ori $a0, $a0, 1 |
| ; CHECK-NEXT: csrwr $a0, 2 |
| ; CHECK-NEXT: .LBB0_2: # %if.end |
| ; CHECK-NEXT: csrrd $a0, 2 |
| ; CHECK-NEXT: andi $a0, $a0, 1 |
| ; CHECK-NEXT: bnez $a0, .LBB0_4 |
| ; CHECK-NEXT: # %bb.3: # %if.then2 |
| ; CHECK-NEXT: b %plt(bug) |
| ; CHECK-NEXT: .LBB0_4: # %if.end3 |
| ; CHECK-NEXT: ret |
| entry: |
| %tobool.not = icmp eq i32 %flag, 0 |
| br i1 %tobool.not, label %if.end, label %if.then |
| |
| if.then: ; preds = %entry |
| %0 = tail call i32 @llvm.loongarch.csrrd.w(i32 2) |
| %or = or i32 %0, 1 |
| %1 = tail call i32 @llvm.loongarch.csrwr.w(i32 %or, i32 2) |
| br label %if.end |
| |
| if.end: ; preds = %if.then, %entry |
| %2 = tail call i32 @llvm.loongarch.csrrd.w(i32 2) |
| %and = and i32 %2, 1 |
| %tobool1.not = icmp eq i32 %and, 0 |
| br i1 %tobool1.not, label %if.then2, label %if.end3 |
| |
| if.then2: ; preds = %if.end |
| tail call void @bug() |
| br label %if.end3 |
| |
| if.end3: ; preds = %if.then2, %if.end |
| ret void |
| } |
